Oracle8 8.0.5.0.0版的Java应用程序连接问题

r6hnlfcb  于 2023-10-16  发布在  Oracle
关注(0)|答案(2)|浏览(119)

我给出了一个从Java应用程序连接到Oracle8 Release 8.0.5.0.0的任务。我的代码片段如下。

import java.sql.*;

class OracleConOldJava {
    public static void main(String args[]) {
        Connection con = null;
        Statement stmt = null;
        ResultSet rs = null;

        try {
            // Load the Oracle JDBC driver
            Class.forName("oracle.jdbc.driver.OracleDriver");

            // Establish the database connection
            con = DriverManager.getConnection(
                "jdbc:oracle:thin:@192.168.1.3:1521/DBNAME", "USERNAME", "PASSWORD");

            // Create a statement
            stmt = con.createStatement();

            // Execute the SQL query with FETCH FIRST to limit the number of rows
            rs = stmt.executeQuery(
                "SELECT COL1, COL2, COL3 FROM TABLE_A FETCH FIRST 5 ROWS ONLY");

            // Iterate through the result set and print the data
            while (rs.next()) {
                System.out.println(
                    rs.getInt("COL") + "  " +
                    rs.getString("COL2") + "  " +
                    rs.getString("COL3"));
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                // Close the resources in the reverse order of acquisition
                if (rs != null) rs.close();
                if (stmt != null) stmt.close();
                if (con != null) con.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}

我在java 1.4中使用ojdbc14.jar。
当我运行下面的代码得到错误。

C:\j2sdk1.4.2_18\bin\java.exe -cp .;ojdbc14.jar OracleConOldJava
java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1
ORA-02248: invalid option for ALTER SESSION

        at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
        at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
        at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:283)
        at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:278)
        at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:785)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:362)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at OracleConOldJava.main(OracleConOldJava.java:14)

我用java 1.8和ojdbc8.jar,java 1.4和ojdbc14.jar。发生了相同的错误。这可能是什么原因呢?是因为驱动程序不匹配吗?如果是这样,我必须使用的驱动程序是什么?

p1tboqfb

p1tboqfb1#

你有(至少)两个问题:
1.错误消息为:

ORA-02248: invalid option for ALTER SESSION

这意味着,当您创建连接并且Oracle隐式启动会话时,将调用ALTER SESSION命令,而该命令无效。您没有显示任何ALTER SESSION命令,因此它可能位于触发器中。您需要修复该命令,使其有效。

  1. FETCH FIRST n ROWS ONLY语法在Oracle 12中引入。你正在使用Oracle 8,所以它不会工作。相反,您需要:
SELECT COL1, COL2, COL3 FROM TABLE_A WHERE ROWNUM <= 5

但是,您可能还需要一个ORDER BY子句(否则您将得到5个随机行,而不是5个特定行)。

SELECT * FROM (SELECT COL1, COL2, COL3 FROM TABLE_A ORDER BY COL1, COL2, COL2) WHERE ROWNUM <= 5
mzmfm0qo

mzmfm0qo2#

设法用Java 1.2和classes12.zip修复

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